Pile-wire.



G. CROSSLAND.

PILE WIRE,

APPLICATION m50 um 28,1915.

Patented Apr. 18, 1916.

GEORGE CROSSLAND, 0F" WORCESTER, MASSACHUSETTS, ASSIGNOR. TO

CROMPTON &

KNOWLES LOOM `TOIEMIS, OF WGRCESTER, MASSACHUSETTS, A CORPORATION OFMASSACHUSETTS.

specification of Letters Patent.

rrnnwmn.

Patented Apr. 18, 1916.

Application filed July 28, 1915. Serial No. 42,434.

To all whom it may concern.'

Be it known that l, ,GEORGE CnossLANn, a citizen of the United States,residing .at Worcester` in the county of Worcester and State ofl\/Ia.ssachi1setts` have invented a new and useful Pile-"Wre, of whichthe following is a specification. i

This invention relates to a pile wire of special construction and todevices for detachably securing a pile ycutting `knife thereto. i

1t is the general object of my invention toimprove the construction ofsuch Wires, with increased economy of manufacture and eiiiciency inoperation.`

l/Vith this general object invicw one feature of my invention relatestoa novel construction of the wire itself by which `the cssentialvertical rigidity of thewire is combined with `increased lateralflexibility.

second feature of my invention relates to the provision ot' improvedmeans for detachably securing' ay pile cutting knife With- 1n a. recessformedin the pile wire.

Further features of my invention relate to certain arrangements andcombinations of parts which will be hereinafter described and moreparticularly pointed out in the appended claims:

Two forms of my invention are shown in the drawings in which- Figure lis a vertical sectional View of certain portions of a loom with myimproved pile wire supported thereby; Fig. 2 is an enlarged sideelevation of the pile wire; Fig. 2l is an enlarged end elevation of thepile wire looking in the direction of the arrow 3 in Fig. 1; Fig. 4 is avpartial longitudinal sectional view taken along'the line 4-4 in Fig.5l; Fig. 5 isma view similar to Fig. 4 but showing a slightmodification. and Fig. (i is a topplan view ot the device shown in Fig.5.

` Referringto `the drawings. l have shown.

my improved pile wire 10 as detachably secured at its rear end to asupporting blade 11 which in turn is secured to an upright bar 12, theblades 11 and bar 12 being suitablv supported at the rear of the reed13. For a full description of the detachable connection between the wirel() and the 15 being each suitably secured to the oomr sides (notshown). The plate 15 is spaced `above the cloth supporting girt 14, thefab- `ric passlngoverv the girt 14 and under the plate 15 to a take-uproll 16 of any usual form. At its rear edge the plate 15 is prov1dedwith a projecting flange 17 which engages a notch 18 formed in the frontend or head of the pile `wire 10.

The wire 10 is oi special construction and consists of two thinflatmetal strips 10 and 10b (Fig. 6) extending longitudinally throughoutthe length of the wire, and se cured to each other throughoutsubstantially all of the inclined portion ofthe wire by soldering or insome other' convenient manner. In the left hand portion of the wire, asviewed in the drawings, the strips 10 and l()b are slightly separated byinterposed vspacing' strips 20 and 21 (l-"ig. 4)) The strips 20 and 21are longitudinally spaced to provide an opening 22 for a purpose to bedescribed. At the right hand end of the spacing strip 21 the side strips10 and 10b are left free and unattached to each other for a shortdistance. as indicated at 23 be tween the dotted lines 23 in Fig. 2. Bythus'leaving the strips unattached to each other for a short distance`the lateral flexibility of the pile wire is much increased, while thevertical rigidity remains unimpaired.

At the extreme left hand end the pile wire 1() is provided with athickened end portion or head 24. in order to more firmly engage theplate 15. As shown in the drawings. this end portion comprises a singlepiecev of metal having the notch 18 formed in its front edge and alsohaving a` longitudinal sus groove 25 (Fig. 3) formed in its lower edgeupper edge, said recess extending forwardly l to form a socket 27 underthe head 24. The right hand end of the spacing strip 20 is also cutawfay to provide an undercut recess 2S.

'The detachablepile cutting knife l29 is formed of thin sheet `steel andis designed to be inserted between the side strips 10 and l()b in therecess formed by the insertion of the spacing strip 20. At its righthand or rear end the knife 29 is provided with an inclined cutting edge30k and the knife is 'alsoprovided with an -upward eX- tension 31 bywhich it may be more readily handled. At its left hand end, the knifehas a lug 32 adapted to engage the socket 27 and at its right hand endit has a de pending portion 33' adapted to project "downwardly throughthe opening 22 and struction of the knife is otherwise as in Fig. 4 andthe operation and effect of the forwardly into the recess 2S.

The knife may be readily inserted from above within` the recess inthepile wire, the

portion 33 passing downward through the opening 22 previously described.'Ihe'knife is then moved to the left or forwardly to bring the lug 32and the portion 33 into the socket 27 and recess 2S respectively. Itwill beA evident that the knife cannot therefore be removed except `by arearward and upward movement relative to the pile wire 10. In themodified form shown in Figs. 5 and 6, the socket 27 and the lug 32 areomitted and a cross pin 35 is positioned to engage the upper edge of theknife 290. The conshown construction. is identical.

The operation of the device will be readily apparentv from the drawing,the warp threads A passing through the reed 13 in the usual manner andforming the pile loops over the wires 10. These loops are graduallyforced forwardly by the beating up of the reed and as they moveforwardly they engage the cutting edge 30 of the knife 29, thev loopsbeing thereby severed to form the pile of the fabric.

Should certain of the knives become dull or have their cutting edgesinjured in any from the spirit and scope thereof as set forth in theclaims and Ido not wish to be otheryise limited tothe details hereindisclosed,

described two forms of my invensaid girt and engaging said crossplate.said

pile wire having a recess in its upper edge, and a detachable pile knifefitting within said recess, and means to secure said knife againstrenioval therefrom except by a combined rearward and upward movement.

In a loom, a pile wire` having provision at each end for detachabl)v1engaging suitable s supports and formed of two thin fiat metal stripsfirmly secured to each other throughouta portion of their length andsecured to each side of thin spacing strips along another portion oftheir length, an intermediate portion of said metal strips beingunattached to each other whereby increased ilexibility of the pile wireis obtained.

In a loom, in combination, a pile wire, and a detachable knife, saidpile wire hav-` ing provision at each endr for engaging suitablesupports and being formed of two thin fiat metal strips vfirmly securedto each other throughout a portion of their length and secured to eachside of thin spacing strips along another portion of their length, saidknife and said spacing strips having engaging portions by means of saidpile wire and is removable therefrom in a rearward and upward directiononly.

4. In a loom. in combination, a pile wire and a detachable knife, saidpile wire being formed of two thin flat metal strips extendingthroughout the length of the wire and firmly secured to each otherthroughout a major portion thereof, said strips being secured to eachside of thin spacing strips along another portion of their length Vandhaving provision for detachably engaging the pile knife at two separatedpoints, and said knife being positioned between said metal strips andbeing removable therefrom in a rearward and upward direction only.

5. In a loom, in combination, a pile wirer detachably `which said knifeis retained in position on Y,

and a detachable knife, said pile wire being formed of two thin fiatmetal strips -eXtendf ing throughout the length of said Wire, a f

thickened head portion secured to the front end of said strips, andmeans to form a recess between said strips adjacent said head portion,and said knife being formed of thin sheet steel and vbeing detachablysecured in said recess.

6. In a loom, in combination, a pile Wire arid a detachable knife,saidpile Wire being formed of two thin flat strips of sheet metal,

separated at their forward ends by a thin' sheet metal spacing strip,and a` thickened head having a groove in its lower` edge withsheet metalspacing strip, und said knife be- 10 ing,y formed ot' thin sheet steelsubstantially winni in thickness t0 said spacing strip, and

being detnrhnbly secured within the recess formed by smid spacing stripbetween said side strips. 15 In testimony whereof I have hereunto set myhund.

GEORGE CROSSLAND.

